Deng, Guang C., Baba, Satoshi, Ben-Gida, Hadar, Lavoie, Philippe et Moreau, Stéphane.
2025.
« Computational investigation of strain-vorticity interactions in wingtip vortex formation ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
This study investigates the dynamics of the wing-tip vortices, focusing on their formation, interaction, and evolution. Using wall-resolved large-eddy simulations (LES), three independent wing-tip vortices on the supercritical wing geometry were visualized, which were coined the primary vortex (PV), secondary vortex (SV), and tertiary vortex (TV). Using the computational tools, the kinematics, dynamics, and surface pressure effects of these vortices are analyzed. The PV, originating from the pressure-side shear layer, exhibits the characteristics of a wake vortex, signified by high velocity strain, a large amplitude wandering, and progressive vorticity dissipation. In contrast, the SV, forming from the suction-side shear layer, retains the property of jet vortex with strong axial momentum and minimal wandering, leading to a more stable and coherent vortex structure. The formation of the TV, driven by the aft pressure side camber, plays a key role in shaping the final helical tip vortex, where momentum transfer and vortex merging define the downstream aerodynamic and acoustic characteristics. The analysis on the invariants of the velocity gradient tensor ($QR$ analysis) highlights fundamental differences in strain-vorticity interactions between the PV and SV, with the PV indicating dominant strain-induced stretching and dissipation, while the SV remains highly vorticity-dominated, sustaining its structure over longer convective timescales.
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:09 |
| Dernière modification: | 18 déc. 2025 15:09 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32385 |
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